Abstract

This document specifies methods for determining the sound power level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in an environment that approximates to an acoustic free field near one or more reflecting planes. The sound power level produced by the noise source, in frequency bands or with A-weighting applied, is calculated using those measurements.

Begin

2021-02-23

WI

00211202

Planned document number

DIN EN ISO 3744

Project number

00101118

Responsible national committee

NA 001-01-04 AA - Noise emission of machinery and equipment; measurement, reduction, data collection  

Responsible european committee

CEN/TC 211 - Acoustics  

Responsible international committee

ISO/TC 43/SC 1/WG 28 - Basic machinery noise emission standards  

draft standard

Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO/DIS 3744:2023); German and English version prEN ISO 3744:2023
2023-02
Order from DIN Media

previous edition(s)

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010); German version EN ISO 3744:2010
2011-02

Order from DIN Media